fixed docker settings

client/Dockerfile

@@ -1,9 +1,12 @@
-FROM node:16.9.1-alpine3.11
+FROM node:16-alpine as build-step
+RUN mkdir /app
 WORKDIR /app
-COPY package*.json ./
+ENV PATH /app/node_modules/.bin:$PATH
+COPY package*.json /app
 RUN npm install
-# COPY . ./
-EXPOSE 3000
-RUN chown -R node /app/node_modules
-USER node
-CMD [ "npm", "start"]
+COPY . /app
+# USER node
+RUN npm run build
+
+FROM nginx:1-alpine
+COPY --from=build-step /app/build /usr/share/nginx/html